Roller-cutter.



H. E. WILMOTH. ROLLER CUTTER.

APPLICATION FILED FEB. 3. 1906.

PATENTED JULY 17, 1906.

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No. 826,133. PATENTED JULY 17, 1906. H E WILMOTH ROLLER CUTTER. APPLICATION FILED FEB. 3. 1906.

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UNITED STATES HARRY ELIAS WILMOTH,

PATENT OFFICE.

OF ATOHISON, KANSAS, ASSIGNOR OF ONE- Specification of Letters Patent.

Patented July 17, 1906.

Application filed February 3, 1906. Serial No. 299.375.

To all whom it may concern.-

Be it known that LHARRY ELIAS WILMOTH, a citizen of the United States, residing at Atchison, in the county of Atchison, State of Kansas, have invented a new and useful Roller-Cutter, of which the following is a specification.

This invention relates to rotary cutters for shearing-machines which are particularly adapted for cutting stove and furnace pipes and the like; and it has for one of its objects to provide cutters of improved construction which will cut the pipe circumferentially and produce a clean smooth edge without distorting or crumpling the pipe.

A further object of the invention is to provide cutters whicheach combine a shearing edge with one or more roll portions, which latter of one cutter cooperate with the roll portion or portions of the other cutter to draw the metal along the freshly-cut edges simultaneously with the cutting operation.

With these objects in view the invention comprises the various details of construction and arrangement of parts to be hereinafter. more fully described, and pointed out with particularity in the claims appended hereto.

In the accompanying drawings, which illustrates one embodiment of the invention, Figure 1 is a perspective viewof the metal-working machine, having my cutters applied thereto. Fig. 2 is an elevation of the cutters drawn on an enlarged scale. Fig. 3 is a longitudinal sectional view of the cutters. Fig. 4 is a perspective view of one of the cutters. Figs. 5 the cutters in the operation of cutting the pipe without drawing the metal and in the operation of cutting the pipe and drawing the edges at the same time.

Referring to the drawings, A represents a metal-working machine commercially known as a swager. On the shafts 1 and 2 of the machine are mounted the rotary cutters 3 and 4, the latter being disposed directly over and in the same plane with the former. Each cutter comprises an integral body of the best tool-steel and is made with two roll portions 5 and 6, which are of different diameters and separated by a shoulder 7. The edge 8 between the shoulder and larger roll 5 forms the shearing edge of the cutter. From the cut ting edge the roll 5 slightly tapers, so that the part of the roll contiguous with the shearing edge can cooperate with the adjacent part of the roll portion 6 of the opposite cutter and act as drawing-dies to draw or expand the metal along the freshly-cut edge. The rolls 5 of both cutters may be so shaped, if desired, that the drawing effect can be produced along both edges of the parts of the pipe being cut, as shown in Fig. 6. Cutters capable of-producing this result are shown in the present instance. Furthermore, the roll 5 of one cutter cooperates with the roll 6 of the opposite cutter, so as to assist in feeding the pipe during the cutting operation.

. In using the machine, the pipe to be cut is inserted between the two rollers to the desired distance and the upper roller is set to its proper relation by the set-lever 9 of the machine and the crank 10 is turned. This imparts motion to both cutters, so that the two cutting edges 8 will sever the metal and simultaneously the opposed portions of the rolls will exercise a drawing effect on the metal adjacent the edges. Besides producing this drawing effect, the rolls prevent the metal along the edges from crumpling, so that the circular shape of the pipe is preserved and the edge made smooth. The drawing of the metal adjacent the freshly-cut edge can be varied to any extent desired by simply adjusting the relative position of the rolls by means of the adjusting-lever 9. In some cases the drawing eflect accompanying the cutting operation may be sufficient; but if it is desired to be carried further the edge of the pipe can be run a number of times between the rolls, which latter can be adjusted closer and closer together as the rolling proceeds. It will thus be seen that my cutters combine the function of shearing and of rolling the metal. It is to be noted,further, that these functions can be carried on together, as above described, or separately, by properly adjusting the cuttersthat is to say, if shearing is only desired the cutters are adjusted so that the shearing edges meet, but the rolls are not brought into operative relation, as shown in Fig. 5.

I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof; but I desire to have it understood that the apparatus shown is merely illustrative and that the invention can be carried out by other means.

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What I claim as new, and desire to secure by Letters Patent, is-

1. The combination of two rotary cutters provided with shearing edges, and cooperating surface adjacent said edges which si multaneously with the cutting operation draw the metal along the freshly-cut edge thereof, with means for supporting and rotating the cutters.

2. The combination of two rotary cutters each provided with a shearing edge and a roll portion, the roll portion of one cutter being tapered and adapted to cooperate with the roll portion of the other to draw the metal along the freshly-cut edge thereof,with means for supporting and rotating the cutters.

HARRY ELIAS WILMOTH.

Witnesses JEROME HOOVER, WILLIAM L. ROTH. 

